Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details)

v3.4.0.3
Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Intangible Assets        
Amortization expense $ 400 $ 500 $ 500 $ 500
Intangible Assets, Gross 8,196 8,196    
Accumulated Amortization 7,255 6,859    
Total expected future amortization 941 1,337    
Expected future amortization expense of intangible assets        
2017 288      
2018 242      
2019 224      
2020 187      
Total expected future amortization $ 941 $ 1,337    
Manufacturing license        
Intangible Assets        
Weighted Average Amortization Period 17 years 17 years    
Intangible Assets, Gross $ 3,700 $ 3,700    
Accumulated Amortization 3,635 3,585    
Total expected future amortization 65 115    
Expected future amortization expense of intangible assets        
Total expected future amortization $ 65 $ 115    
Technology        
Intangible Assets        
Weighted Average Amortization Period 10 years 10 years    
Intangible Assets, Gross $ 2,240 $ 2,240    
Accumulated Amortization 1,381 1,157    
Total expected future amortization 859 1,083    
Expected future amortization expense of intangible assets        
Total expected future amortization 859 1,083    
Backlog        
Intangible Assets        
Intangible Assets, Gross 490 490    
Accumulated Amortization 473 351    
Total expected future amortization 17 139    
Impairment of Intangible Assets, Finite-lived 100      
Expected future amortization expense of intangible assets        
Total expected future amortization 17 139    
Trade Name and Parts, Service and TA100 Customer Relationships        
Intangible Assets        
Intangible Assets, Gross 1,766 1,766    
Accumulated Amortization $ 1,766 $ 1,766    
Minimum | Trade Name and Parts, Service and TA100 Customer Relationships        
Intangible Assets        
Weighted Average Amortization Period 1 year 2 months 12 days 1 year 2 months 12 days    
Maximum | Trade Name and Parts, Service and TA100 Customer Relationships        
Intangible Assets        
Weighted Average Amortization Period 5 years 5 years